Smooth operation, minimum seal leakage and long life are the three qualities to be foun in every Clark Mast. Each type can be used either for mobile operation when installed into a vehicle or, with accessories, erected in the field. The advantages of using low pressure air to extend a telescopic mast are well known. The Phase 2 Clark masts have all of these advantages including simplicity of construction minimising maintenance, smooth operation up and down, are simple to install, have low roof protrusion when vehicle mounted, are intrinsically safe, and are torsionally extra stiff when fully extended. When vehicle mounted, the design minimises protusion above the vehicle roof. As mast performance depends on the installation accessories, Clark Masts have designed their accessories for maximum performance. All Clark Masts are designed to be dismantled with ordinary tools. In addition bearing surfaces are adjustable to take up eventual wear. The four mast series are unified into one broad family spanning heights from 3 to 30 meters, and headload capacities from 5 to 150 Kg (300 Kg on special order).

Whether set up in the field or mounted in or on a vehicle or shelter, Clark Phase 2 models provide the performance required at generally the lowest total cost. Installation is usually very simple. In military applications many Clark Masts are shelter mounted. For these a wide range of already developed and approved mounting brackets are available. Longevity has always been a design criteria for clark Masts. Air pressure can be provided by small compressor, air bottle or vehicle air-braking system. .